PL/SQL :: Update Vs Merge - Updating One Table Based On Values In Another
Jun 26, 2013
I have two tables lets say TAB_A and TAB_B. I altered table B to include a new column from table A I wrote a merge statement as follows to merge the data
MERGE INTO TAB_AUSING TAB_BON (TAB_A.SECURITYPERSONKEY=TAB_B.SECURITYPERSONKEY)WHEN MATCHED THEN UPDATE SET TAB_A.PPYACCOUNT=TAB_B.PPYACCOUNT;
I know INSERT is for inserting new records UPDATE to my knowledge is to modify currently existing records (loosely) MERGE is one I rarely used, until this particular scenario. The code works perfectly fine, but I was wondering how could I write an update statement? Or in this scenario should I even be using an update statement?
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Aug 27, 2013
I have more than 100 records in CSV format. I have to import these records to a particular table which already contains data. I have to do a multiple update at a time, based on the condition . ie., if field1 is '1' then update field2 as 'A0001' and if field1 is '5' then update field2 as 'A0007' . The values are not in an order. Is it possible.
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Nov 6, 2013
I have 2 tables
Table 1Name Item DateJon Apples 06/11/2013 00:30:00 hrsSam OrangesNish Apples
Table 2 - Net countName Item CountNish Apples 10Nish Oranges 17Nish BananaSam Apples 10Sam Oranges 1Sam Bananas 1Jon Apples 8
I need to create a job that checks Table 1 for new records added after last run and then add the count in Table 2 accordingly.how to achieve this using PL/SQl or something similar
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Feb 20, 2012
I have two tables as
Table LEAVE
Column Type Null Description
APP_NO Number(6,0) Not Null PK Leave Application Number
ECN Number(6,0) Not Null FK Employee Code Number
APP_Date Date Not Null Date of Application
From_Date Date Not Null Date from which the leave starts
TO_Date Date Not Null Date upto which the current application leave remains i.e. end of leave applied for date
NO_OF_Days Number(2,0) Not Null Difference between TO_Date and From_date
LEAVE_TYPE VARCHAR2(3) Not Null Can be one of SL, CL, LWP or LTA
Status VARCHAR2(25) Not Null Can be one of Saved, Rejected or Approved
Remark VARCHAR2(100) Nullable Reason to be put if status is rejected
[code]....
What I really want to do is that when a record is inserted in the LEAVES table (an application for leave is submitted by any employee and if it is approved) then I want to update the _USED values of the corresponding LEAVE_TYPE in the LEAVEENTITLE table which holds values of types of leaves entitled to employee.
For example if 3 rows are inserted in the LEAVES table as
INSERT INTO LEAVES (APP_NO,ECN,FROM_DATE,TO_DATE,APP_DATE,NO_OF_DAYS,LEAVE_TYPE,STATUS,REMARK)
(1,1234,'2012-01-01','2012-01-05','2012- 01-01',5,'SL','APPROVED',null);
INSERT INTO LEAVES (APP_NO,ECN,FROM_DATE,TO_DATE,APP_DATE,NO_OF_DAYS,LEAVE_TYPE,STATUS,REMARK)
(2,1235,'2012-01-01','2012-01-05','2012- 01-01',5,'CL','SAVED',null);
INSERT INTO LEAVES (APP_NO,ECN,FROM_DATE,TO_DATE,APP_DATE,NO_OF_DAYS,LEAVE_TYPE,STATUS,REMARK)
(3,1236,'2012-01-01','2012-01-05','2012- 01-01',5,'LTA','REJECTED','Clash with the annual meet, revise dates');
Then the value of SL_USED in the LEAVEENTITLE table of record corresponding to the ECN = 1234 should be updated with +5 and naturally the SL_ UNUSED value of the record should be updated as SL_ENTITLED - SL_USED. For the APP_NO 2 and 3 none of the values in LEAVEENTITLE should be updated as the STATUS is not 'APPROVED'
I tried with the following trigger, but is compiling with a warning (not showing what the warning is)
CREATE OR REPLACE TRIGGER leaveentitle
AFTER INSERT ON LEAVES
FOR EACH ROW
BEGIN
UPDATE LEAVEENTITLE LVE
SET LVE.SL_USED = SL_USED+(CASE
WHEN :NEW.LEAVE_TYPE = 'SL'&& NEW.STATUS='APPROVED'
THEN :NEW.NO_OF_DAYS
SL_UNUSED=SL_ENTITLED - SL_USED
ELSE 0
END),
[code]....
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Oct 20, 2010
Actually I need update statement some thing like below scenario...
I explained my problem cleary in attached PDF since i cannot format text well here..
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Nov 4, 2009
CREATE TABLE "SCOTT"."SEATALLOTMENT"
("YEAR" NUMBER(4,0),
"COLLEGECODE" CHAR(4 BYTE),
"COURSECODE" CHAR(3 BYTE),
[Code].....
Now i want to UPDATE reducing the AVAILABLE column by 1 in COURSESEATS table based on common columns collegecode,coursecode for a ROW inserted into SEATALLOTMENT table ,i am confused to what approach i have to follow whether its a procedure or a trigger
CASE:
Here in this case as i insert a row with krcl,cse as college code and course code respectively into seatallotment table the available column in courseseat table for the respective row with mentioned common column must become 59 from 60
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Apr 1, 2012
I am trying to update a column based on another column in the same table (student table) and a column from another table (school table)
Code is:
update student_table
set student_code =
(select l.student_code
from school_table l, student_table n
where l.school = n.schoolname)
I get the following error ORA - 01427 Single-row subquery returns more than one row.
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Apr 17, 2013
We had two tables.
Table 1: matusetrans
ITEMNUM Location Quantity transdate
AM1324 AM1 2 12-4-12
AM1324 AM1 2 15-5-12
AM1324 AM1 3 10-6-12
AM1324 AM1 4 5-1-13
[Code]....
Table 2: Inventory
ITEMNUM STORELOC lastyear currentyear
AM1324 AM1 need sum(quantity) here need sum(quantity)
AM1324 AM2 need sum(quantity) here need sum(quantity)
We have to update the last year and current year columns with sum of quantities for each item from matusetrans table based on date at different location in Inventory table.
we had nearly 13,000 records(itemnum's with different location) in inventory table in DB we have to update entire records.
How to write an sql queries to update lastyear and currentyear columns with sum of quantities based on itemnum and location in Inventory table
Edit/Delete Message
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Feb 12, 2013
i am trying to create Procedure which will create the partitions based on the other table date values one per each day.
CREATE OR REPLACE PROCEDURE PARTITION_TEST(PART_DATE_TABLE IN VARCHAR2, TABLE_NAME IN VARCHAR2,SCHEMA_NAME IN VARCHAR2)
AS
V_PART_NM VARCHAR2(20);
V_PART_CNT NUMBER;
V_DATE DATE;
V_SCHEMA_NAME VARCHAR(15);
[Code]..
It is not creating the partitions and even not giving any errors.
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Apr 13, 2011
I have table with values :
PROV_IDMEASURE_IDPERCENTAGE
Z0000221P114 45
Z0000135P115 68
For the column all possible values are ( P102,P101,P103 etc toP124). I want to create a view ( if possible ) from the above with data output as :
PROV_ID P101 P102 P103 ............................P124
z000234 23 45 60 72
basically this view has columns based on the previous tables column ( MEASURE_ID) values and the values will be corresponding value in column Percentage.
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Feb 3, 2009
I was trying to update the AGENTS table with the data based on queries. But all the records updates with the same data. I can't understand why.
Write a PL script to populate these columns as follows:
TRAVEL_STATUS is one of three values:
GLOBETROTTER: agent has visited five or more different locations in the course of his missions
ROVER: agent has visited between one and four locations
SLOB: agent has been on no missions.
CONTACTS is the number of targets that share the agent's home location.
some of the tables and columns are
agents table: agent_id, location_id
targets table: target_id, location_id
missions_agents table: agent_id, mission_id
missions_targets: target_id, mission_id
missions table: mission_id, location_id
My code is
DECLARE
status AGENTS.TRAVEL_STATUS%TYPE;
contact AGENTS.CONTACTS%TYPE;
CURSOR loc_cur
IS
SELECT
a.AGENT_ID id,
[code].....
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Feb 20, 2012
I have a table with following values in a column
Table A
col1
10
35
20
25
I need to form a query which will take these four values in rownum part and split the records into 4 groups in Table B.
Table B- 90 records (10 + 35 + 20 + 25)
Now for example, the Table B is having emp no, order by ascending and i need to split into 4 groups,
with first group having start value -1 and end value -10
second group - start value -11 and end value-45
third group - start value -46 and end value -65
fourth group - start value - 66 and end value-90
one way i can do it by using union and count, which was a bit tedious if the no. of group goes upto 10.
note that the values in Table A is dynamically changing, so not able to hard code values.
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May 7, 2010
I have a table called 'price' and want to update it with a table called 'update'. See workbook in the attachment.
The idea is to update the table 'price' with values from 'update' as long as the values from 'update' are different then the values in 'price' or the value in price with 'enddat' empty is not present in 'update'. you can still follow this...
Example:
Enddat for df_location 4 from 'price' is empty and df_location 4 is not present in 'update' so 'enddat' for this df_location should be filled with any date from 'update' (there is always going to be just one distinct date).
I have tried something like this:
proc sql;
insert into work.price (enddat) where enddat = ''
select (date) where df_location not in (select
df_location from work.update);
;
quit;
Well this obviously doesn't work. I'm trying to pass 2 criteria (when enddat is empty and df_location is not present in 'update') but I'm not sure where to put them...
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Jun 13, 2012
I have a parent table EMPLOYEE which includes columns (sysid, serviceno,employeename...) sysid is Primary key, serviceno is Unique key and I have child table DEPENDENT includes columns (sysid,employee_sysid,name,dob...) here again SYSID is primary key for DEPENDENTS table, employee_sysid is Foreign key of EMPLOYEE table.
Now I want to change SYSID (using sequence) in EMPLOYEE table which need to be update in DEPENDENTS table as well
Note: I have 10000 records in EMPLOYEE table as well as I have 5 more child tables which need to update new SYSID.
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Apr 21, 2013
Using Oracle 11g SOE R2...
I used to have two tables to store details of PROPERTIES e.g UNIT_COMMERCIAL , UNIT_RESIDENTIAL. I need to combine both of them into one table called UNIT. I moved the data to the new table, but now I am stuck how to update the values of the child table which called MARKETING.
---
Now, I have two tables:
MARKETING (ID NUMBER PK , OLD_UNIT_ID NUMBER FK ...)
UNIT (NEW_ID NUMBER PK , OLD_UNIT_ID NUMBER ... )
I need to update the value of OLD_UNIT_ID in Marketing table to be equal to NEW_ID in the table of UNIT. As you can see the values of OLD_UNIT_ID in both tables are the same.
I used this statement
update ( SELECT distinct M.UNIT_ID , U.OLD_ID , U.ID FROM MARKETING M INNER JOIN UNIT U ON (M.UNIT_ID = U.OLD_ID)) set unit_id = idBut I got this error:
ORA-01732: data manipulation operation not legal on this view??
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Jun 4, 2012
CREATE TABLE emp
(
code NUMBER(4),
name VARCHAR2(15),
salary NUMBER(5),
ovt NUMBER(4),
sal_mon DATE,
dept number (3)
)
[code]....
9 rows selected.
Required Output is
CODE NAME SALARY OVT SAL_MON DEPTMerge Codes
---------- --------------- ---------- ---------- --------- ---------- -----------
1068 ALI 18500 2385 31-OCT-11 1021068,1793
1908 ASGHAR 17000 1900 31-OCT-11 1021908,1802
1960 ZAHID 16000 775 31-OCT-11 1021960,1952
1188 RAZA 9500 2910 31-OCT-11 1111188
1275 RAHIL 15300 3480 31-OCT-11 1111275,1176
Merge 02 rows of same department having sum(salary) <=20000. select those rows who have lower salary.
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Feb 7, 2013
I have two tables have almost the same columns, how can I use merge statement to update the target table only when there is difference between source and target table. Is there any easier way not compare each column one by one? I am using Oracle 11.2
Here is the MERGE statement:
Merge into tb_trgt trgt using tb_src src
on (src.id = trgt.id)
when not matched then insert (trgt.id, trgt.nm, trgt.addr) values (src.id, src.nm, src.nm)
when matched then update set trgt.nm = src.nm, trgt.addr = src.addr
where trgt.nm <> src.nm or trgt.addr <> src.addr
;
Is there any easier way to specify the where clause in the NOT MATCHED? I don't want compare each column of the tables. Since I may have many columns in the tables.
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Sep 2, 2011
I have a large table and want to calculate just a few values. Therefore, I don't want to create a new table, I want to update the table. Here an example:
I want to calculate the VALUE_LAG with ID = 4 only (-> two values).
create table zTEST
( PRODUCT number,
ID number,
VALUE number,
VALUE_L1 number );
[Code]..
I tried this, but obviously, windows functions are not allowed in the update statement.
update zTEST
set VALUE_L1 = lag(VALUE) over (partition by PRODUCT, order by ID)
where ID = 4
How can I do this?
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Feb 22, 2010
I have a query like this -
SELECT
FIELD_A,
FN_FUNCTION(CARVE_ID, 1) FIELD_B,
FN_FUNCTION(CARVE_ID, 2) FIELD_C,
FN_FUNCTION(CARVE_ID, 3) FIELD_D,
FN_FUNCTION(CARVE_ID, 4) FIELD_E,
FN_FUNCTION(CARVE_ID, 5) FIELD_F,
FN_FUNCTION(CARVE_ID, 6) FIELD_G
FROM TB_CARVE;
When I execute the query, it returns the data (approx - 40,000 rows) in 1 min.But when I try to insert this data into another table (or create a table of this data) it takes me about 2 hours.
Tried using Materialized view, its again the same the refresh takes 2 hours.Basically here, what I am trying to do is the data from the above query is used to update the values in another table.What ever the procedure I am trying it takes 2 hours.
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Mar 19, 2007
I am attempting to update a single field in one table based on a select from two tables. However, I am receiving the following error.
ORA-00933: SQL command not properly ended
The sql I am using is as follows:
update PS_TRNS_CRSE_DTL
set RQMNT_DESIGNTN = 'TRN'
FROM PS_TRNS_CRSE_DTL A, PS_STDNT_CAR_TERM B
where (SELECT A.EMPLID, A.ACAD_CAREER, A.INSTITUTION, A.MODEL_NBR, A.ARTICULATION_TERM, A.TRNSFR_EQVLNCY_GRP, A.TRNSFR_EQVLNCY_SEQ, A.TRNSFR_STAT, A.GRADING_BASIS, A.RQMNT_DESIGNTN, B.STUDY_AGREEMENT
FROM PS_TRNS_CRSE_DTL A, PS_STDNT_CAR_TERM B
[code]......
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Sep 6, 2013
I am trying to update multiple columns from one table based on the results of another table So I have 3 tables as follows
HISTORYSUMM_SNAPADM_CHOICE
My SQL code is loosely SELECT SUM(H.HIS1),
SS.SNAP1,
AC.ADM1FROMHISTORY H,
SUMM_SNAP SS,ADM_CHOICE ACWHERE H.HIS2=SS.SNAP2AND SS.SNAP3=AC.ADM2GROUP BY SS.SNAP1,
AC.ADM1
This works, and I am able to SUM the column as I need with the right numbers. I altered the SUMM_SNAP table and now I want this summarized column to be in the table I tried using UPDATE, but there is no FROM clause to let me do the table join/group by
UPDATE SUMM_SNAPSET SUMM_SNAP.SNAP3=SUM(H.HIS1)FROMHISTORY H,
SUMM_SNAP SS,ADM_CHOICE AC
WHERE H.HIS2=SS.SNAP2AND SS.SNAP3=AC.ADM2
GROUP BY SS.SNAP1, AC.ADM1
The above is obviously wrong - but just trying to show whatI was thinking What would be the best method to get the numbers from the SUM into a table?
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Jul 25, 2013
I used Region, Process by to search the report which appears as shown above. Then I use Choose Auditors column to select my Auditor and copy paste it into the report under To be Audited By col. Is there a way to automate the process. I am here using a tabular form in APEX. My main aim is to assign auditors based on Region, not equal to Processed by.
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Sep 7, 2010
I have to update 20 and 60 million records of a table. The update statement are
1> 20 million recs
update mycustomer set update_time=add_months(sysdate,240) where seq_num = 1;
commit;
2> 60 million recs
update mycustomer set update_time=sysdate-seq_num where seq_num <> 1;
commit;
Q1> Is there any way to improve performance
Q2> Will parallel dml improve performance
Q2> Would a pl/sql cursor make any difference in speed.
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Mar 6, 2013
create table test1
( ID NUMBER(11)
,MEMBER_NMBR NUMBER(10)
,CODE_NMBR NUMBER(7)
,ROW_EFCTV_DT DATE
,ROW_TRMNTN_DT DATE
[code]....
insert into test1 values (11007,7462,32,'30/sep/2012','31/dec/9999',3,'25/sep/1998','AUTUMN',1,0,344);
insert into test1 values (11007,7462,32,'30/oct/2012','31/dec/9999',3,'25/sep/1998','AUTUMN',1,0,344);
IDMEMBER_NMBRCODE_NMBRROW_EFCTV_DTROW_TRMNTN_DTFLAG_NMBRBRTH_DTNAMECLAIM_CDAMT1AMT2
1100774623209/30/2012 00:0012/31/9999 00:00309/25/1998 00:00AUTUMN10344
1100774623210/30/2012 00:0012/31/9999 00:00309/25/1998 00:00AUTUMN10344
I have to update the row_trmntn_dt of first row to row_efctv_dt of 2nd row which is 30th Oct 2012 - 1 day i.e. 29th Oct 2012
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Feb 15, 2011
I am trying to update a million rows in one table with the values from another tables.
Table being updated CI_ADJ_CHAR column CHAR_VAL_FK1
Table from which values will be used CK_ADJ columns (cx_id, ci_id)
The CI_ADJ_CHAR.CHAR_VAL_FK1 values match CK_ADJ.CX_ID and should be updated with the value CK_ADJ.CI_ID.
The CK_ADJ table has 1.3 million rows and both the columns have indexes defined. Table definitiuon mentioned below
The CI_ADJ_CHAR table has 14 million rows and will update 1 million rows and has an index on the ADJ_ID column but not on the CHAR_VAL_FK1 column.
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Sep 14, 2011
In my application i have a requirement as follows.I have 3 tables table1,table2,table3.I have 4 tickets for one license number which is related to client table as follows.
table1
=====
license_nbr(pk) name address
=============== ===== =======
LicNo1 test testing
Table2
=====
ticket number(pk) amountto be paid balance_amount license_nbr(fk table2)
tk1 200 200 0 LicNo1
tk2 300 300 0 LicNo1
tk3 400 400 0 LicNo1
tk4 500 500 400 LicNo1
table3
=====
payment table
ticket_number(fk table2) amount paid payment status license_nbr(fk table1)
tk1 1000 excess paid. LicNo1
so now the excess paid amount to be adjusted for the remaining tickets through tk2 to tk4.and only tk4 should remain with 400 the balance amount should be updated accordinglyand i have a license number which is a foreignkey of client table. writing a procedure for updating the table2 based on the table3.
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Dec 19, 2012
I've tried to Update table with values from another table, but I couldn't.Is there a single way to do that with just one query?Below goes an example:
CREATE TABLE TEST1 (
COD NUMBER,
DCR VARCHAR2(10) );
CREATE TABLE TEST2 (
COD NUMBER,
DCR VARCHAR2(10),
DCR2 VARCHAR2(10) );
[code]....
I want to UPDATE the field DCR of the table TEST1 with the VALUE of the field DCR2 of the table TEST2.At the end, after the update, the table TEST1 would be like that:
SELECT * FROM TEST1
COD --- DCR
------------------
1 'TESTE3'
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May 24, 2013
I am using the below code to update specific sub-partition data using oracle merge statements.
I am getting the sub-partition name and passing this as a string to the sub-partition clause.
The Merge statement is failing stating that the specified sub-partition does not exist. But the sub-partition do exists for the table.
We are using Oracle 11gr2 database.
Below is the code which I am using to populate the data.
declare
ln_min_batchkey PLS_INTEGER;
ln_max_batchkey PLS_INTEGER;
lv_partition_name VARCHAR2 (32767);
lv_subpartition_name VARCHAR2 (32767);
begin
[code]....
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Jun 1, 2010
I am trying to update records in the target table based on the records coming in from source. For instance, if the incoming record is present in the target table I would update them in the target else I would simply insert. I have over one million records in my source while my target has 46 million records. The target table is partitioned based on calendar key. I implement this whole logic using Informatica. Looking at the informatica session log I find that the informatica code is perfectly fine but its in the update part it takes long time (more than 5 days to update one million records). find the TARGET TABLE query and the UPDATE query as below.
TARGET TABLE:
CREATE TABLE OPERATIONS.DENIAL_REGRET_FACT
(
CALENDAR_KEY INTEGER NOT NULL,
DAY_TIME_KEY INTEGER NOT NULL,
SITE_KEY NUMBER NOT NULL,
RESERVATION_AGENT_KEY INTEGER NOT NULL,
LOSS_CODE VARCHAR2(30) NOT NULL,
PROP_ID VARCHAR2(5) NOT NULL,
[code].....
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May 7, 2013
Using apex 4.1.1 , linux , 11gr2
Basically I have requirement to generate a Word doc (letter to a Word mail merge) from a button/navigation link pressed on Apex page which will gather data from the report and fill in values in appropriate place in Word doc.
Is this even possible with Apex with/o BI Publisher
I have Fop installed and tested , PDF works great but excel and RTF is not reading the encoding on attachment download.I am aware of new PDF feature in 4.2.2 but upgrade is just not the scope right now.
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